Sight-feed lubricator.



PATENTED JUNE 20, 1905.

F. W. EDWARDS.

SIGHT FEED LUBRIGATOR.

APPLICATION FILED MAE. 4, 1904.

WITNESSES:

INVENTOR -6 WM, mfli wk NiTEn STATES Patented June 20, 1905.

FRANK WV. E DWVARDS, OF LOGANSIORT, INDIANA, ASSIGNCR TO THE CHICAGO LUBRICATOR COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OF ILLINOIS.

SIGHT-FEED LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 792,764, dated June 20, 1905.

Application filed March 4, 1904. Serial No. 196,599-

To all whom, it may concern:

Be it known that I, FRANK W. EDWARDS, a citizen of the United States, residing at Logansport, in the county of Cass and State of Indiana, have invented a certain new and useful Improvement in Sight-Feed Lubricators, of which the following is a full, clear, and exact description.

In two certain Letters Patent of the United States granted to me February 26, 1901, No. 668,81A, and September 17, 1901, No. 682,981, is included a certain check-valve interposed between the condenser and the feed-pipe of the boiler, whereby siphoning of the lubricator is prevented upon the arising of conditions conducive to such siphoning-as, for example, should the engine be housed or otherwise left with the water-valve and the steamsupply valve open and the throttle valve closed. In the present invention an improvement on the check-valve is shown and in ad dition is provided a special means for heating the oil in the lubricator-oil bowl or receptacle, all as I will proceed now more particularly to set forth and finally claim.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is a side elevation, partly in section, showing portions of a condensation-displacement sightfeed lubricator containing the improvements. Fig. 2 is a rear elevation, partly in section, of the oil-bowl. Fig. 3 is a top plan view of the oil-bowl of Fig. 2.

The oil-bowl 1 maybe of any approved construction, having a mounting-stud 2 and a condenser 3. This condenser is provided with a nipple 4. and to this nipple is secured a tubular casting 5, having a Valve-seat 6, access to which is bad through the opening 7, normally closed by a screw stopper or plug 8. In the valve-seat is seated a check-valve 9, opening upwardly and interposed directly between the boiler steam-pipe 10 and the condenser, so that should a so-called vacuum be produced at any point below the checkvalve said check-valve will seat, and thus prevent the siphoning of the condenser and lubricator.

11 is one of the circulating-pipes connected with the engine-valve oil-pipe, it being understood that there are two such circulating-pipes.

12 is the air-pump feed-circulating pipe, and in this instance this pipe is connected with a nipple 13 on the oil-bowl. A second nipple 1 1 is applied to the oil-bowl, and it is connected by a pipe 15 with the oil-pipe 16. The two nipples 13 and 14:, and consequently the pipes 12 and 15, are connected by a U-shaped pipe 17, erected vertically in the oil-bowl and extending to nearly the bottom of said bowl, so as to impart its heat to the oil in said bowl.

18 is a suitable inlet to the oil-bowl for filling purposes, and it is adapted to be closed by a screw cap or plug.

As herein shown, the heater-pipe 17 is a part of the air-pump feed-circulating pipe; but obviously it might be made a part of the enginecylinder feed -circulating pipe. Since this pipe is connected with the steam-supply pipe 10 through pipe 12, it is obvious that the oil or lubricant will be heated before it passes out of the bowl to the air-pump feed and into the oil-pipe leading to the air-pump, thus answering the double purpose of heater and steam-circulating pipe.

It is to be noted that the casting 5 embodies in a single integral structure nipples for the condenser connection and also for the steampipe and several circulating-pipes connections, and therefore avoids the necessity of a great number of joints heretofore used.

The invention is not limited to the form of heater-pipe 17 herein shown or its described arrangement so long as said pipe extends sufficiently into the oil-bowl to heat its contents and also serves to connect the circulatingpipes.

As already stated, the check-valve acts automatically to prevent siphoning when, as,

for example, the engine is housed or otherwise left With the Water-valve (connected, for instance, With the lubricator, as at 43, Fig. 1) and the steam-supply valve (not shown, but as usual) open and the throttle-valve closed.

What I claim is 1. In a sight-feed lubricator, an oil-bowl, a condenser mounted thereon and provided with a top nipple, and a tubular casting connected directly to the nipple on the condenser, and provided With integral means for receiving the steam-boiler and circulatingpipes connections, there being an integral valve-seat interposed directly between the condenser connection and the boiler connection, and a checkvalve arranged in said seat, substantially as FRANK W. EDWARDS.

Witnesses:

FRA K W. FURRY, GEO. M. DICKSON. 

